CVE-2025-58362
HIGH7.5EPSS 0.09%Hono's flaw in URL path parsing could cause path confusion
Description
### Summary A flaw in the `getPath` utility function could allow path confusion and potential bypass of proxy-level ACLs (e.g. Nginx location blocks). ### Details The original implementation relied on fixed character offsets when parsing request URLs. Under certain malformed absolute-form Request-URIs, this could lead to incorrect path extraction. Most standards-compliant runtimes and reverse proxies reject such malformed requests with a 400 Bad Request, so the impact depends on the application and environment. ### Impact If proxy ACLs are used to protect sensitive endpoints such as `/admin`, this flaw could have allowed unauthorized access. The confidentiality impact depends on what data is exposed: if sensitive administrative data is exposed, the impact may be High (CVSS 7.5); otherwise it may be Medium (CVSS 5.3). ### Resolution The implementation has been updated to correctly locate the first slash after "://", preventing such path confusion.
Affected packages (1)
- npm/hono>= 4.8.0, < 4.9.6
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |